Robert l selman (53 resultados)

Condición: good. Fast & Free Shipping â" Good condition. It may show normal signs of use, such as light writing, highlighting, or library markings, but all pages are intact and the book is fully readable. A solid, complete copy that's ready to enjoy.

Condición: Good. A sound copy with only light wear. Overall a solid copy at a great price.

hardcover. Condición: Very Good.

Paperback. Condición: Good. Connecting readers with great books since 1972! Used textbooks may not include companion materials such as access codes, etc. May have some wear or writing/highlighting. We ship orders daily and Customer Service is our top priority.

paperback. Condición: Very Good. Very Good - Crisp, clean, unread book with some shelfwear/edgewear, may have a remainder mark - NICE PAPERBACK Standard-sized.

Hardcover. Condición: Very Good. 1. It's a well-cared-for item that has seen limited use. The item may show minor signs of wear. All the text is legible, with all pages included. It may have slight markings and/or highlighting.

paperback. Condición: New. BRAND NEW A portion of your purchase of this book will be donated to non-profit organizations.Over 1,000,000 satisfied customers since 1997! Choose expedited shipping (if available) for much faster delivery. Delivery confirmation on all US orders.

paperback. Condición: Very Good. Used - Very Good.

Condición: New.

Condición: very_good.

Condición: good. The item shows wear from consistent use, but it remains in good condition and works perfectly. All pages and cover are intact including the dust cover, if applicable . Spine may show signs of wear. Pages may include limited notes and highlighting. May NOT include discs, access code or other supplemental materials.…

Hardcover. Condición: Very Good. No Jacket. May have limited writing in cover pages. Pages are unmarked. ~ ThriftBooks: Read More, Spend Less.

Hardcover. Condición: Good. No Jacket. Pages can have notes/highlighting. Spine may show signs of wear. ~ ThriftBooks: Read More, Spend Less.

Hardcover. Condición: Very Good. Near Fine. First Edition. Signed. A Very Good or slightly better copy in gray and green hard covers, in a Near Fine dust jacket. Briefly inscribed and signed by author Robert L. Selman (with his first name only) in the year of publication. Inscribed by Author(s). Book. …

Condición: Good. . . Before placing your order for please contact us for confirmation on the book's binding. Check out our other listings to add to your order for discounted shipping. All orders guaranteed and ship within 24 hours.

Hardcover. Condición: Fair. No Jacket. Readable copy. Pages may have considerable notes/highlighting. ~ ThriftBooks: Read More, Spend Less.

Hardcover. Condición: Very Good. Estado de la sobrecubierta: Very Good. 1st Edition. Selman, Robert L. & Lynn Hickey Schultz., The University of Chicago Press, 1990, c1990, 1st Edition, boards & cloth (hard cover), some underlining in text o/w vg+ with vg+ dj, 357 pp with references & index, tall 8vo, ISBN: 0226747905, 'The experience of friendship is an essential and important part of growing up; yet the ways in which youngsters learn to make and keep friends are not automatic, innate, or universal'.…

Broschiert. Condición: Gut. 116 Seiten; Das hier angebotene Buch stammt aus einer teilaufgelösten Bibliothek und kann die entsprechenden Kennzeichnungen aufweisen (Rückenschild, Instituts-Stempel.); der Buchzustand ist ansonsten ordentlich und dem Alter entsprechend gut. In ENGLISCHER Sprache. Sprache: Englisch Gewicht in Gramm: 230. …

Cloth Over Board. Condición: Good. Estado de la sobrecubierta: Good. Text is clean, binding is strong. Minor corner bumping on cover and dust jacket. This book has been kept in good condition. Size: 8vo - over 7¾" - 9¾" tall.

Textbook Binding. Condición: As New. Unused! Teacher's Edition. Book Leaves in 1 Business Day or Less! Leaves Same Day if Received by 2 pm EST! Slight shelf wear. Contents Unused. Like New.

Condición: good. This book is in Good condition. There may be some notes and highligting but otherwise the book is in overall good condition.

Condición: New.

Condición: New. In English.

Spiral-bound. Condición: As New. my shelf location - k-15-b*.

Hardcover. Condición: Very Good. 1. With dust jacket. It's a well-cared-for item that has seen limited use. The item may show minor signs of wear. All the text is legible, with all pages included. It may have slight markings and/or highlighting.

Hardbound. Condición: As New. New. Contents Foreword. 1. The soil and the plant. 2. The microbe and its activities. 3. The soil population and its distribution. 4. Role of microbes in the decomposition of organic substances in the soil. 5. Transformation of nitrogen by soil microbes. 6. Transformation of nitrogen by soil microbes (continued). 7. Transformation of mineral substances in soil through the direct or indirect action of microorganisms. 8. Interrelationships between higher plants and soil microorganisms. 9. Modification of the soil population. 10. Importance of microbes in soil fertility. Index. The soil is not a mass of dead debris resulting simply from the physical and chemical weathering of rocks and of plant and animal remains through atmosphere agencies but it is teeming with life. Every small particle of soil contains numerous types of living organisms belonging both to the plant and animal kingdoms yet so small that they cannot be recognized with the naked eye. These organism are therefore called microbes. These microbes comprise numerous types of bacteria fungi algae protozoa nematodes and other invertebrates which vary considerably in their structure size mode of living and relationship to soil processes. In the cycles of transformation of elements in nature the microbes play an important if not a leading role. Were it not for them the soil would soon become covered with a considerable mass of undecomposed plant and animal residues life would soon cease since the very limited supply of carbon and available nitrogen the most essential elements in the growth of living organisms would become exhausted. It should be recalled that carbon dioxide the source of carbon for the growth of plants which in their turn supply the food for animal is present in the atmosphere only in a concentration of 0.03 per cent. This is equivalent to 5.84 tons of carbon over each acre of land. A good yield of sugar cane will consume about 20 tons of carbon in a single growing season of course most of the surface of the earth supports less vegetation than this and diffusion tends to create a uniform distribution of gases. It has actually been calculated that the plant world consumes 64.8 millions of tons of carbon annually which amounts to 1/35 of the total carbon content of the atmosphere. The atmosphere supply of carbon dioxide is however constantly replenished from the decomposition products of the organic substances in the soil only as a result of this does plant growth not cease entirely through a deficiency of an available supply of carbon. In the absence of microbes the available nitrogen would also become very rapidly exhausted as can be appreciated from the fact that this nitrogen is never present in the soil in forms available to plant growth as ammonia or nitrate in amounts of more than a few pounds per acre. It is made available to plants only through the constant activity of the microbes. The microorganisms through their various activities thus enable organic life to continue uninterruptedly on our planet. They keep in constant circulation the elements which are most essential for plant and animal life. They break down the complex organic molecules built up by plants and animals into the simple mineralized constituents making the elements again available for the growth of cultivated and uncultivated plants which in their turn supply further food for animals. Just as man and other animals as well as higher plants find their habitat on the surface of the soil or immediately below it so do the microbes live largely within the upper few inches of the earth's crust where they carry out their important activities supplying a continuous stream of nutrients in an available form for the growth of higher plants. This surface pellicle of the earth is thus found to be the seat of numerous processes of incalculable importance in the life of man animals and plants enabling them to carry out their normal existence on our planet. Just as man and animals are determined in the. …

Condición: acceptable. This book is in Acceptable condition. All pages are intact, but may have lots of notes, water damage or other issues and be ex library.

Hardcover. Condición: new. New Copy. Customer Service Guaranteed.

Condición: good. Befriedigend/Good: Durchschnittlich erhaltenes Buch bzw. Schutzumschlag mit Gebrauchsspuren, aber vollständigen Seiten. / Describes the average WORN book or dust jacket that has all the pages present.

Condición: New. Satisfaction Guaranteed or your money back.